texture- the look and feel of the rock's surface
grains-particles of minerals or other rocks
igneous rock-forms from the cooling of molten rock
sedimentary rock- forms when particles of other rocks or the remains of plant's and animal's are pressed and cemented together
metamorphic rock- formed when an existing rock is changed by heat, pressure, or chemical reactions
Outline
How Geologists Classify Rocks
rocks are important for building
rocks form mountains, hills, valleys, beaches, and the ocean floor
earth's crust is made of rock
geologists collect and study to classify rocks
Texture
texture is the look and feel of a rock's surface
grains give the rock its texture
Grain Size
usually grains of rocks are visible
rocks that are fine-grained are so small you can't see them
Table of Contents
Classifying Rocks 5.1
Vocab:
texture- the look and feel of the rock's surfacegrains-particles of minerals or other rocks
igneous rock-forms from the cooling of molten rock
sedimentary rock- forms when particles of other rocks or the remains of plant's and animal's are pressed and cemented together
metamorphic rock- formed when an existing rock is changed by heat, pressure, or chemical reactions
Outline
How Geologists Classify Rocks
- rocks are important for building
- rocks form mountains, hills, valleys, beaches, and the ocean floor
- earth's crust is made of rock
- geologists collect and study to classify rocks
Texture- texture is the look and feel of a rock's surface
- grains give the rock its texture
Grain Size- usually grains of rocks are visible
- rocks that are fine-grained are so small you can't see them
Grain Shape